When I create a reminder (e.g. pick up milk at 5:30 p.m.) I enter it in my calendar and assign it to Reminders. When the time comes, I'm notified with all the features of a calendar appointment (popup, email, SMS). Don't worry about the end time of the appointment — you're only concerned about being notified once it starts.
With the new Hangout chat function, you can now have access to your #Google+ hangout chats even when the hangout ends. Make note that all those who were in the hangout with you, have access to the same chat.
A new analysis suggests establishing Google authorship has moved past the early adopter stage and those marketers who have not yet established authorship and who are not regularly sharing content on Google+ would be wise to do so.